How to replace a HD3 amplifier

View the short video on the right to see one of our quality control technicians replace a HD3 Amplifier.


  1. Remove perimeter mounting screws from the amplifier backplate and then remove the backplate/amplifier from the cabinet.
  2. Unclip the 3 internal connectors from the original amp.
  3. Reconnect the 3 internal connectors to the new amp.
  4. Insert the new amplifier backplate into the cabinet and reinstall the perimeter mounting screws.